Lost Communication with Gateway "B"
Lost Communication with Gateway "B": the control module has detected this fault condition.
Affected components
- Gateway module
- Can bus wiring
Common causes
- High likelihood: Secondary gateway unpowered
- Medium likelihood: Secondary gateway internally failed
- Low likelihood: Gateway module routing CAN messages incorrectly
Possible symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.